(I)  

(II)  

(II)  
Arrange the compounds I, II and III in decreasing order of their heats of combustion:-
(a) II>I>III
(b) I>II>III
(c) III>II>I
(d) III>I>II

(I)  

(II) 

(III)  

The correct order of reactivity of I,II and III towards addition reactions is:

(1) I>III>II                 

(2) I>II>III             

(3) III>II>I               

(4) III>I>II

Which of the following reactants is suitable for the preparation of methane and ethane by using one-step only?

1.  H₂C = CH₂

2. CH₃OH

3. CH₃-Br

4. CH₃-CH₂-OH

 $\stackrel{{\mathrm{Br}}_2/\mathrm{hv}}{\to }$ Monobromo derivatives

The number of possible monobromo products is (excluding stereoisomers):

1.  4     
2.  5 
3.  8
4.  10

On catalytic reduction by one mole  H₂/Pt ,how many alkenes will give n-butane?
(a)1
(b)2
(c)3
(d)4

Product (A) of the reaction is :
1. \(\mathrm{CH}_3-\mathrm{CH}_3\)
2. \(\mathrm{CH}_2=\mathrm{CH}_2\)
3. \(\mathrm{CH}_3-\mathrm{CH}=\mathrm{CH}_2\)
4. None of these

Which of the following bromides is the major product of the reaction shown below, assuming that there are no carbocation rearrangement?
$+\mathrm{HBr} \underset{(1 \mathrm{Equivalent})}{\to } {\mathrm{C}}_{13}{\mathrm{H}}_{17}\mathrm{Br}$

_1. 

_2. 

_3.  

_4. 

What is a likely product of the reaction shown?

1. 

2. 

3. 

4. 

Which of the following, when undergoing addition of HBr, will form ONLY a pair of diastereomers?